Extract Vue extension (#10486)

This PR extracts Vue support into an extension and removes the built-in
C# support from Zed.

Release Notes:

- Removed built-in support for Vue, in favor of making it available as
an extension. The Vue extension will be suggested for download when you
open a `.vue` file.

---------

Co-authored-by: Max <max@zed.dev>

extensions/vue/languages/vue/brackets.scm

@@ -0,0 +1,2 @@
+("<" @open ">" @close)
+("\"" @open "\"" @close)

extensions/vue/languages/vue/config.toml

@@ -0,0 +1,22 @@
+name = "Vue.js"
+code_fence_block_name = "vue"
+grammar = "vue"
+path_suffixes = ["vue"]
+block_comment = ["<!-- ", " -->"]
+autoclose_before = ";:.,=}])>"
+brackets = [
+    { start = "{", end = "}", close = true, newline = true },
+    { start = "[", end = "]", close = true, newline = true },
+    { start = "(", end = ")", close = true, newline = true },
+    { start = "<", end = ">", close = true, newline = true, not_in = ["string", "comment"] },
+    { start = "\"", end = "\"", close = true, newline = false, not_in = ["string"] },
+    { start = "'", end = "'", close = true, newline = false, not_in = ["string", "comment"] },
+    { start = "`", end = "`", close = true, newline = false, not_in = ["string"] },
+]
+word_characters = ["-"]
+scope_opt_in_language_servers = ["tailwindcss-language-server"]
+prettier_parser_name = "vue"
+
+[overrides.string]
+word_characters = ["-"]
+opt_into_language_servers = ["tailwindcss-language-server"]

extensions/vue/languages/vue/highlights.scm

@@ -0,0 +1,15 @@
+(attribute) @property
+(directive_attribute) @property
+(quoted_attribute_value) @string
+(interpolation) @punctuation.special
+(raw_text) @embedded
+
+((tag_name) @type
+ (#match? @type "^[A-Z]"))
+
+((directive_name) @keyword
+ (#match? @keyword "^v-"))
+
+(start_tag) @tag
+(end_tag) @tag
+(self_closing_tag) @tag

extensions/vue/languages/vue/injections.scm

@@ -0,0 +1,7 @@
+(script_element
+  (raw_text) @content
+  (#set! "language" "javascript"))
+
+(style_element
+  (raw_text) @content
+  (#set! "language" "css"))

extensions/vue/languages/vue/overrides.scm

@@ -0,0 +1,7 @@
+(comment) @comment
+
+[
+  (raw_text)
+  (attribute_value)
+  (quoted_attribute_value)
+] @string